/* ocsp.h */
/* Written by Tom Titchener <Tom_Titchener@groove.net> for the OpenSSL
 * project. */

/* History:
   This file was transfered to Richard Levitte from CertCo by Kathy
   Weinhold in mid-spring 2000 to be included in OpenSSL or released
   as a patch kit. */

/* ====================================================================
 * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in
 *   the documentation and/or other materials provided with the
 *   distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *   software must display the following acknowledgment:
 *   "This product includes software developed by the OpenSSL Project
 *   for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *   endorse or promote products derived from this software without
 *   prior written permission. For written permission, please contact
 *   openssl-core@openssl.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *   nor may "OpenSSL" appear in their names without prior written
 *   permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *   acknowledgment:
 *   "This product includes software developed by the OpenSSL Project
 *   for use in the OpenSSL Toolkit (http://www.openssl.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

module deimos.openssl.ocsp;

import deimos.openssl._d_util;

public import deimos.openssl.types;
public import deimos.openssl.x509;
public import deimos.openssl.x509v3;
public import deimos.openssl.safestack;

extern (C):
nothrow:

/* Various flags and values */

enum OCSP_DEFAULT_NONCE_LENGTH = 16;

enum OCSP_NOCERTS = 0x1;
enum OCSP_NOINTERN = 0x2;
enum OCSP_NOSIGS = 0x4;
enum OCSP_NOCHAIN = 0x8;
enum OCSP_NOVERIFY = 0x10;
enum OCSP_NOEXPLICIT = 0x20;
enum OCSP_NOCASIGN = 0x40;
enum OCSP_NODELEGATED = 0x80;
enum OCSP_NOCHECKS = 0x100;
enum OCSP_TRUSTOTHER = 0x200;
enum OCSP_RESPID_KEY = 0x400;
enum OCSP_NOTIME = 0x800;

/*  CertID ::= SEQUENCE {
 *      hashAlgorithm            AlgorithmIdentifier,
 *      issuerNameHash     OCTET STRING, -- Hash of Issuer's DN
 *      issuerKeyHash      OCTET STRING, -- Hash of Issuers public key (excluding the tag & length fields)
 *      serialNumber       CertificateSerialNumber }
 */
struct ocsp_cert_id_st {
	X509_ALGOR* hashAlgorithm;
	ASN1_OCTET_STRING* issuerNameHash;
	ASN1_OCTET_STRING* issuerKeyHash;
	ASN1_INTEGER* serialNumber;
	}
alias ocsp_cert_id_st OCSP_CERTID;

/+mixin DECLARE_STACK_OF!(OCSP_CERTID);+/

/*  Request ::=     SEQUENCE {
 *      reqCert                    CertID,
 *      singleRequestExtensions    [0] EXPLICIT Extensions OPTIONAL }
 */
struct ocsp_one_request_st {
	OCSP_CERTID* reqCert;
	STACK_OF!(X509_EXTENSION) *singleRequestExtensions;
	}
alias ocsp_one_request_st OCSP_ONEREQ;

/+mixin DECLARE_STACK_OF!(OCSP_ONEREQ);+/
mixin DECLARE_ASN1_SET_OF!(OCSP_ONEREQ);


/*  TBSRequest      ::=     SEQUENCE {
 *      version             [0] EXPLICIT Version DEFAULT v1,
 *      requestorName       [1] EXPLICIT GeneralName OPTIONAL,
 *      requestList             SEQUENCE OF Request,
 *      requestExtensions   [2] EXPLICIT Extensions OPTIONAL }
 */
struct ocsp_req_info_st {
	ASN1_INTEGER* version_;
	GENERAL_NAME* requestorName;
	STACK_OF!(OCSP_ONEREQ) *requestList;
	STACK_OF!(X509_EXTENSION) *requestExtensions;
	}
alias ocsp_req_info_st OCSP_REQINFO;

/*  Signature       ::=     SEQUENCE {
 *      signatureAlgorithm   AlgorithmIdentifier,
 *      signature            BIT STRING,
 *      certs                [0] EXPLICIT SEQUENCE OF Certificate OPTIONAL }
 */
struct ocsp_signature_st {
	X509_ALGOR* signatureAlgorithm;
	ASN1_BIT_STRING* signature;
	STACK_OF!(X509) *certs;
	}
alias ocsp_signature_st OCSP_SIGNATURE;

/*  OCSPRequest     ::=     SEQUENCE {
 *      tbsRequest                  TBSRequest,
 *      optionalSignature   [0]     EXPLICIT Signature OPTIONAL }
 */
struct ocsp_request_st {
	OCSP_REQINFO* tbsRequest;
	OCSP_SIGNATURE* optionalSignature; /* OPTIONAL */
	}
alias ocsp_request_st OCSP_REQUEST;

/*  OCSPResponseStatus ::= ENUMERATED {
 *      successful            (0),      --Response has valid confirmations
 *      malformedRequest      (1),      --Illegal confirmation request
 *      internalError         (2),      --Internal error in issuer
 *      tryLater              (3),      --Try again later
 *                                      --(4) is not used
 *      sigRequired           (5),      --Must sign the request
 *      unauthorized          (6)       --Request unauthorized
 *  }
 */
enum OCSP_RESPONSE_STATUS_SUCCESSFUL = 0;
enum OCSP_RESPONSE_STATUS_MALFORMEDREQUEST = 1;
enum OCSP_RESPONSE_STATUS_INTERNALERROR = 2;
enum OCSP_RESPONSE_STATUS_TRYLATER = 3;
enum OCSP_RESPONSE_STATUS_SIGREQUIRED = 5;
enum OCSP_RESPONSE_STATUS_UNAUTHORIZED = 6;

/*  ResponseBytes ::=       SEQUENCE {
 *      responseType   OBJECT IDENTIFIER,
 *      response       OCTET STRING }
 */
struct ocsp_resp_bytes_st {
	ASN1_OBJECT* responseType;
	ASN1_OCTET_STRING* response;
	}
alias ocsp_resp_bytes_st OCSP_RESPBYTES;

/*  OCSPResponse ::= SEQUENCE {
 *     responseStatus         OCSPResponseStatus,
 *     responseBytes          [0] EXPLICIT ResponseBytes OPTIONAL }
 */
struct ocsp_response_st
	{
	ASN1_ENUMERATED* responseStatus;
	OCSP_RESPBYTES* responseBytes;
	};

/*  ResponderID ::= CHOICE {
 *     byName   [1] Name,
 *     byKey    [2] KeyHash }
 */
enum V_OCSP_RESPID_NAME = 0;
enum V_OCSP_RESPID_KEY = 1;
struct ocsp_responder_id_st
	{
	int type;
	union value_ {
		X509_NAME* byName;
        	ASN1_OCTET_STRING* byKey;
		}
	value_ value;
	};

/+mixin DECLARE_STACK_OF!(OCSP_RESPID);+/
// Already declared above
// mixin(DECLARE_ASN1_FUNCTIONS!"OCSP_RESPID");

/*  KeyHash ::= OCTET STRING --SHA-1 hash of responder's public key
 *                           --(excluding the tag and length fields)
 */

/*  RevokedInfo ::= SEQUENCE {
 *      revocationTime              GeneralizedTime,
 *      revocationReason    [0]     EXPLICIT CRLReason OPTIONAL }
 */
struct ocsp_revoked_info_st {
	ASN1_GENERALIZEDTIME* revocationTime;
	ASN1_ENUMERATED* revocationReason;
	}
alias ocsp_revoked_info_st OCSP_REVOKEDINFO;

/*  CertStatus ::= CHOICE {
 *      good                [0]     IMPLICIT NULL,
 *      revoked             [1]     IMPLICIT RevokedInfo,
 *      unknown             [2]     IMPLICIT UnknownInfo }
 */
enum V_OCSP_CERTSTATUS_GOOD = 0;
enum V_OCSP_CERTSTATUS_REVOKED = 1;
enum V_OCSP_CERTSTATUS_UNKNOWN = 2;
struct ocsp_cert_status_st
	{
	int type;
	union value_ {
		ASN1_NULL* good;
		OCSP_REVOKEDINFO* revoked;
		ASN1_NULL* unknown;
		}
	value_ value;
	}
alias ocsp_cert_status_st OCSP_CERTSTATUS;

/*  SingleResponse ::= SEQUENCE {
 *     certID                       CertID,
 *     certStatus                   CertStatus,
 *     thisUpdate                   GeneralizedTime,
 *     nextUpdate           [0]     EXPLICIT GeneralizedTime OPTIONAL,
 *     singleExtensions     [1]     EXPLICIT Extensions OPTIONAL }
 */
struct ocsp_single_response_st {
	OCSP_CERTID* certId;
	OCSP_CERTSTATUS* certStatus;
	ASN1_GENERALIZEDTIME* thisUpdate;
	ASN1_GENERALIZEDTIME* nextUpdate;
	STACK_OF!(X509_EXTENSION) *singleExtensions;
	}
alias ocsp_single_response_st OCSP_SINGLERESP;

/+mixin DECLARE_STACK_OF!(OCSP_SINGLERESP);+/
mixin DECLARE_ASN1_SET_OF!(OCSP_SINGLERESP);

/*  ResponseData ::= SEQUENCE {
 *     version              [0] EXPLICIT Version DEFAULT v1,
 *     responderID              ResponderID,
 *     producedAt               GeneralizedTime,
 *     responses                SEQUENCE OF SingleResponse,
 *     responseExtensions   [1] EXPLICIT Extensions OPTIONAL }
 */
struct ocsp_response_data_st {
	ASN1_INTEGER* version_;
	OCSP_RESPID* responderId;
	ASN1_GENERALIZEDTIME* producedAt;
	STACK_OF!(OCSP_SINGLERESP) *responses;
	STACK_OF!(X509_EXTENSION) *responseExtensions;
	}
alias ocsp_response_data_st OCSP_RESPDATA;

/*  BasicOCSPResponse       ::= SEQUENCE {
 *     tbsResponseData      ResponseData,
 *     signatureAlgorithm   AlgorithmIdentifier,
 *     signature            BIT STRING,
 *     certs                [0] EXPLICIT SEQUENCE OF Certificate OPTIONAL }
 */
  /* Note 1:
     The value for "signature" is specified in the OCSP rfc2560 as follows:
     "The value for the signature SHALL be computed on the hash of the DER
     encoding ResponseData."  This means that you must hash the DER-encoded
     tbsResponseData, and then run it through a crypto-signing function, which
     will (at least w/RSA) do a hash-'n'-private-encrypt operation.  This seems
     a bit odd, but that's the spec.  Also note that the data structures do not
     leave anywhere to independently specify the algorithm used for the initial
     hash. So, we look at the signature-specification algorithm, and try to do
     something intelligent.	-- Kathy Weinhold, CertCo */
  /* Note 2:
     It seems that the mentioned passage from RFC 2560 (section 4.2.1) is open
     for interpretation.  I've done tests against another responder, and found
     that it doesn't do the double hashing that the RFC seems to say one
     should.  Therefore, all relevant functions take a flag saying which
     variant should be used.	-- Richard Levitte, OpenSSL team and CeloCom */
struct ocsp_basic_response_st {
	OCSP_RESPDATA* tbsResponseData;
	X509_ALGOR* signatureAlgorithm;
	ASN1_BIT_STRING* signature;
	STACK_OF!(X509) *certs;
	}
alias ocsp_basic_response_st OCSP_BASICRESP;

/*
 *  CRLReason ::= ENUMERATED {
 *       unspecified             (0),
 *       keyCompromise           (1),
 *       cACompromise            (2),
 *       affiliationChanged      (3),
 *       superseded              (4),
 *       cessationOfOperation    (5),
 *       certificateHold         (6),
 *       removeFromCRL           (8) }
 */
enum OCSP_REVOKED_STATUS_NOSTATUS = -1;
enum OCSP_REVOKED_STATUS_UNSPECIFIED = 0;
enum OCSP_REVOKED_STATUS_KEYCOMPROMISE = 1;
enum OCSP_REVOKED_STATUS_CACOMPROMISE = 2;
enum OCSP_REVOKED_STATUS_AFFILIATIONCHANGED = 3;
enum OCSP_REVOKED_STATUS_SUPERSEDED = 4;
enum OCSP_REVOKED_STATUS_CESSATIONOFOPERATION = 5;
enum OCSP_REVOKED_STATUS_CERTIFICATEHOLD = 6;
enum OCSP_REVOKED_STATUS_REMOVEFROMCRL = 8;

/* CrlID ::= SEQUENCE {
 *    crlUrl               [0]     EXPLICIT IA5String OPTIONAL,
 *    crlNum               [1]     EXPLICIT INTEGER OPTIONAL,
 *    crlTime              [2]     EXPLICIT GeneralizedTime OPTIONAL }
 */
struct ocsp_crl_id_st {
	ASN1_IA5STRING* crlUrl;
	ASN1_INTEGER* crlNum;
	ASN1_GENERALIZEDTIME* crlTime;
        }
alias ocsp_crl_id_st OCSP_CRLID;

/* ServiceLocator ::= SEQUENCE {
 *     issuer    Name,
 *     locator   AuthorityInfoAccessSyntax OPTIONAL }
 */
struct ocsp_service_locator_st {
	X509_NAME* issuer;
	STACK_OF!(ACCESS_DESCRIPTION) *locator;
        }
alias ocsp_service_locator_st OCSP_SERVICELOC;

enum PEM_STRING_OCSP_REQUEST = "OCSP REQUEST";
enum PEM_STRING_OCSP_RESPONSE = "OCSP RESPONSE";

/+ FIXME: Not yet ported.
#define d2i_OCSP_REQUEST_bio(bp,p) ASN1_d2i_bio_of(OCSP_REQUEST,OCSP_REQUEST_new,d2i_OCSP_REQUEST,bp,p)

#define d2i_OCSP_RESPONSE_bio(bp,p) ASN1_d2i_bio_of(OCSP_RESPONSE,OCSP_RESPONSE_new,d2i_OCSP_RESPONSE,bp,p)

#define	PEM_read_bio_OCSP_REQUEST(bp,x,cb) (OCSP_REQUEST*)PEM_ASN1_read_bio( \
     (ExternC!(char* function()) )d2i_OCSP_REQUEST,PEM_STRING_OCSP_REQUEST,bp,(char**)x,cb,NULL)

#define	PEM_read_bio_OCSP_RESPONSE(bp,x,cb)(OCSP_RESPONSE*)PEM_ASN1_read_bio(\
     (ExternC!(char* function()) )d2i_OCSP_RESPONSE,PEM_STRING_OCSP_RESPONSE,bp,(char**)x,cb,NULL)

#define PEM_write_bio_OCSP_REQUEST(bp,o) \
    PEM_ASN1_write_bio((ExternC!(int function()) )i2d_OCSP_REQUEST,PEM_STRING_OCSP_REQUEST,\
			bp,(char*)o, NULL,NULL,0,NULL,NULL)

#define PEM_write_bio_OCSP_RESPONSE(bp,o) \
    PEM_ASN1_write_bio((ExternC!(int function()) )i2d_OCSP_RESPONSE,PEM_STRING_OCSP_RESPONSE,\
			bp,(char*)o, NULL,NULL,0,NULL,NULL)

#define i2d_OCSP_RESPONSE_bio(bp,o) ASN1_i2d_bio_of(OCSP_RESPONSE,i2d_OCSP_RESPONSE,bp,o)

#define i2d_OCSP_REQUEST_bio(bp,o) ASN1_i2d_bio_of(OCSP_REQUEST,i2d_OCSP_REQUEST,bp,o)

#define OCSP_REQUEST_sign(o,pkey,md) \
	ASN1_item_sign(ASN1_ITEM_rptr(OCSP_REQINFO),\
		o->optionalSignature->signatureAlgorithm,NULL,\
	        o->optionalSignature->signature,o->tbsRequest,pkey,md)

#define OCSP_BASICRESP_sign(o,pkey,md,d) \
	ASN1_item_sign(ASN1_ITEM_rptr(OCSP_RESPDATA),o->signatureAlgorithm,NULL,\
		o->signature,o->tbsResponseData,pkey,md)

#define OCSP_REQUEST_verify(a,r) ASN1_item_verify(ASN1_ITEM_rptr(OCSP_REQINFO),\
        a->optionalSignature->signatureAlgorithm,\
	a->optionalSignature->signature,a->tbsRequest,r)

#define OCSP_BASICRESP_verify(a,r,d) ASN1_item_verify(ASN1_ITEM_rptr(OCSP_RESPDATA),\
	a->signatureAlgorithm,a->signature,a->tbsResponseData,r)

#define ASN1_BIT_STRING_digest(data,type,md,len) \
	ASN1_item_digest(ASN1_ITEM_rptr(ASN1_BIT_STRING),type,data,md,len)

#define OCSP_CERTSTATUS_dup(cs)\
                (OCSP_CERTSTATUS*)ASN1_dup((int(*)())i2d_OCSP_CERTSTATUS,\
		(ExternC!(char* function()) )d2i_OCSP_CERTSTATUS,(char*)(cs))
+/

OCSP_CERTID* OCSP_CERTID_dup(OCSP_CERTID* id);

OCSP_RESPONSE* OCSP_sendreq_bio(BIO* b, char* path, OCSP_REQUEST* req);
OCSP_REQ_CTX* OCSP_sendreq_new(BIO* io, char* path, OCSP_REQUEST* req,
								int maxline);
int OCSP_sendreq_nbio(OCSP_RESPONSE** presp, OCSP_REQ_CTX* rctx);
void OCSP_REQ_CTX_free(OCSP_REQ_CTX* rctx);
int OCSP_REQ_CTX_set1_req(OCSP_REQ_CTX* rctx, OCSP_REQUEST* req);
int OCSP_REQ_CTX_add1_header(OCSP_REQ_CTX* rctx,
		const(char)* name, const(char)* value);

OCSP_CERTID* OCSP_cert_to_id(const(EVP_MD)* dgst, X509* subject, X509* issuer);

OCSP_CERTID* OCSP_cert_id_new(const(EVP_MD)* dgst,
			      X509_NAME* issuerName,
			      ASN1_BIT_STRING* issuerKey,
			      ASN1_INTEGER* serialNumber);

OCSP_ONEREQ* OCSP_request_add0_id(OCSP_REQUEST* req, OCSP_CERTID* cid);

int OCSP_request_add1_nonce(OCSP_REQUEST* req, ubyte* val, int len);
int OCSP_basic_add1_nonce(OCSP_BASICRESP* resp, ubyte* val, int len);
int OCSP_check_nonce(OCSP_REQUEST* req, OCSP_BASICRESP* bs);
int OCSP_copy_nonce(OCSP_BASICRESP* resp, OCSP_REQUEST* req);

int OCSP_request_set1_name(OCSP_REQUEST* req, X509_NAME* nm);
int OCSP_request_add1_cert(OCSP_REQUEST* req, X509* cert);

int OCSP_request_sign(OCSP_REQUEST* req,
		      X509* signer,
		      EVP_PKEY* key,
		      const(EVP_MD)* dgst,
		      STACK_OF!(X509) *certs,
		      c_ulong flags);

int OCSP_response_status(OCSP_RESPONSE* resp);
OCSP_BASICRESP* OCSP_response_get1_basic(OCSP_RESPONSE* resp);

int OCSP_resp_count(OCSP_BASICRESP* bs);
OCSP_SINGLERESP* OCSP_resp_get0(OCSP_BASICRESP* bs, int idx);
int OCSP_resp_find(OCSP_BASICRESP* bs, OCSP_CERTID* id, int last);
int OCSP_single_get0_status(OCSP_SINGLERESP* single, int* reason,
				ASN1_GENERALIZEDTIME** revtime,
				ASN1_GENERALIZEDTIME** thisupd,
				ASN1_GENERALIZEDTIME** nextupd);
int OCSP_resp_find_status(OCSP_BASICRESP* bs, OCSP_CERTID* id, int* status,
				int* reason,
				ASN1_GENERALIZEDTIME** revtime,
				ASN1_GENERALIZEDTIME** thisupd,
				ASN1_GENERALIZEDTIME** nextupd);
int OCSP_check_validity(ASN1_GENERALIZEDTIME* thisupd,
			ASN1_GENERALIZEDTIME* nextupd,
			c_long sec, c_long maxsec);

int OCSP_request_verify(OCSP_REQUEST* req, STACK_OF!(X509) *certs, X509_STORE* store, c_ulong flags);

int OCSP_parse_url(char* url, char** phost, char** pport, char** ppath, int* pssl);

int OCSP_id_issuer_cmp(OCSP_CERTID* a, OCSP_CERTID* b);
int OCSP_id_cmp(OCSP_CERTID* a, OCSP_CERTID* b);

int OCSP_request_onereq_count(OCSP_REQUEST* req);
OCSP_ONEREQ* OCSP_request_onereq_get0(OCSP_REQUEST* req, int i);
OCSP_CERTID* OCSP_onereq_get0_id(OCSP_ONEREQ* one);
int OCSP_id_get0_info(ASN1_OCTET_STRING** piNameHash, ASN1_OBJECT** pmd,
			ASN1_OCTET_STRING** pikeyHash,
			ASN1_INTEGER** pserial, OCSP_CERTID* cid);
int OCSP_request_is_signed(OCSP_REQUEST* req);
OCSP_RESPONSE* OCSP_response_create(int status, OCSP_BASICRESP* bs);
OCSP_SINGLERESP* OCSP_basic_add1_status(OCSP_BASICRESP* rsp,
						OCSP_CERTID* cid,
						int status, int reason,
						ASN1_TIME* revtime,
					ASN1_TIME* thisupd, ASN1_TIME* nextupd);
int OCSP_basic_add1_cert(OCSP_BASICRESP* resp, X509* cert);
int OCSP_basic_sign(OCSP_BASICRESP* brsp,
			X509* signer, EVP_PKEY* key, const(EVP_MD)* dgst,
			STACK_OF!(X509) *certs, c_ulong flags);

X509_EXTENSION* OCSP_crlID_new(char* url, c_long* n, char* tim);

X509_EXTENSION* OCSP_accept_responses_new(char** oids);

X509_EXTENSION* OCSP_archive_cutoff_new(char* tim);

X509_EXTENSION* OCSP_url_svcloc_new(X509_NAME* issuer, char** urls);

int OCSP_REQUEST_get_ext_count(OCSP_REQUEST* x);
int OCSP_REQUEST_get_ext_by_NID(OCSP_REQUEST* x, int nid, int lastpos);
int OCSP_REQUEST_get_ext_by_OBJ(OCSP_REQUEST* x, ASN1_OBJECT* obj, int lastpos);
int OCSP_REQUEST_get_ext_by_critical(OCSP_REQUEST* x, int crit, int lastpos);
X509_EXTENSION* OCSP_REQUEST_get_ext(OCSP_REQUEST* x, int loc);
X509_EXTENSION* OCSP_REQUEST_delete_ext(OCSP_REQUEST* x, int loc);
void* OCSP_REQUEST_get1_ext_d2i(OCSP_REQUEST* x, int nid, int* crit, int* idx);
int OCSP_REQUEST_add1_ext_i2d(OCSP_REQUEST* x, int nid, void* value, int crit,
							c_ulong flags);
int OCSP_REQUEST_add_ext(OCSP_REQUEST* x, X509_EXTENSION* ex, int loc);

int OCSP_ONEREQ_get_ext_count(OCSP_ONEREQ* x);
int OCSP_ONEREQ_get_ext_by_NID(OCSP_ONEREQ* x, int nid, int lastpos);
int OCSP_ONEREQ_get_ext_by_OBJ(OCSP_ONEREQ* x, ASN1_OBJECT* obj, int lastpos);
int OCSP_ONEREQ_get_ext_by_critical(OCSP_ONEREQ* x, int crit, int lastpos);
X509_EXTENSION* OCSP_ONEREQ_get_ext(OCSP_ONEREQ* x, int loc);
X509_EXTENSION* OCSP_ONEREQ_delete_ext(OCSP_ONEREQ* x, int loc);
void* OCSP_ONEREQ_get1_ext_d2i(OCSP_ONEREQ* x, int nid, int* crit, int* idx);
int OCSP_ONEREQ_add1_ext_i2d(OCSP_ONEREQ* x, int nid, void* value, int crit,
							c_ulong flags);
int OCSP_ONEREQ_add_ext(OCSP_ONEREQ* x, X509_EXTENSION* ex, int loc);

int OCSP_BASICRESP_get_ext_count(OCSP_BASICRESP* x);
int OCSP_BASICRESP_get_ext_by_NID(OCSP_BASICRESP* x, int nid, int lastpos);
int OCSP_BASICRESP_get_ext_by_OBJ(OCSP_BASICRESP* x, ASN1_OBJECT* obj, int lastpos);
int OCSP_BASICRESP_get_ext_by_critical(OCSP_BASICRESP* x, int crit, int lastpos);
X509_EXTENSION* OCSP_BASICRESP_get_ext(OCSP_BASICRESP* x, int loc);
X509_EXTENSION* OCSP_BASICRESP_delete_ext(OCSP_BASICRESP* x, int loc);
void* OCSP_BASICRESP_get1_ext_d2i(OCSP_BASICRESP* x, int nid, int* crit, int* idx);
int OCSP_BASICRESP_add1_ext_i2d(OCSP_BASICRESP* x, int nid, void* value, int crit,
							c_ulong flags);
int OCSP_BASICRESP_add_ext(OCSP_BASICRESP* x, X509_EXTENSION* ex, int loc);

int OCSP_SINGLERESP_get_ext_count(OCSP_SINGLERESP* x);
int OCSP_SINGLERESP_get_ext_by_NID(OCSP_SINGLERESP* x, int nid, int lastpos);
int OCSP_SINGLERESP_get_ext_by_OBJ(OCSP_SINGLERESP* x, ASN1_OBJECT* obj, int lastpos);
int OCSP_SINGLERESP_get_ext_by_critical(OCSP_SINGLERESP* x, int crit, int lastpos);
X509_EXTENSION* OCSP_SINGLERESP_get_ext(OCSP_SINGLERESP* x, int loc);
X509_EXTENSION* OCSP_SINGLERESP_delete_ext(OCSP_SINGLERESP* x, int loc);
void* OCSP_SINGLERESP_get1_ext_d2i(OCSP_SINGLERESP* x, int nid, int* crit, int* idx);
int OCSP_SINGLERESP_add1_ext_i2d(OCSP_SINGLERESP* x, int nid, void* value, int crit,
							c_ulong flags);
int OCSP_SINGLERESP_add_ext(OCSP_SINGLERESP* x, X509_EXTENSION* ex, int loc);

mixin(DECLARE_ASN1_FUNCTIONS!"OCSP_SINGLERESP");
mixin(DECLARE_ASN1_FUNCTIONS!"OCSP_CERTSTATUS");
mixin(DECLARE_ASN1_FUNCTIONS!"OCSP_REVOKEDINFO");
mixin(DECLARE_ASN1_FUNCTIONS!"OCSP_BASICRESP");
mixin(DECLARE_ASN1_FUNCTIONS!"OCSP_RESPDATA");
mixin(DECLARE_ASN1_FUNCTIONS!"OCSP_RESPID");
mixin(DECLARE_ASN1_FUNCTIONS!"OCSP_RESPONSE");
mixin(DECLARE_ASN1_FUNCTIONS!"OCSP_RESPBYTES");
mixin(DECLARE_ASN1_FUNCTIONS!"OCSP_ONEREQ");
mixin(DECLARE_ASN1_FUNCTIONS!"OCSP_CERTID");
mixin(DECLARE_ASN1_FUNCTIONS!"OCSP_REQUEST");
mixin(DECLARE_ASN1_FUNCTIONS!"OCSP_SIGNATURE");
mixin(DECLARE_ASN1_FUNCTIONS!"OCSP_REQINFO");
mixin(DECLARE_ASN1_FUNCTIONS!"OCSP_CRLID");
mixin(DECLARE_ASN1_FUNCTIONS!"OCSP_SERVICELOC");

const(char)* OCSP_response_status_str(c_long s);
const(char)* OCSP_cert_status_str(c_long s);
const(char)* OCSP_crl_reason_str(c_long s);

int OCSP_REQUEST_print(BIO* bp, OCSP_REQUEST* a, c_ulong flags);
int OCSP_RESPONSE_print(BIO* bp, OCSP_RESPONSE* o, c_ulong flags);

int OCSP_basic_verify(OCSP_BASICRESP* bs, STACK_OF!(X509) *certs,
				X509_STORE* st, c_ulong flags);

/* BEGIN ERROR CODES */
/* The following lines are auto generated by the script mkerr.pl. Any changes
 * made after this point may be overwritten when the script is next run.
 */
void ERR_load_OCSP_strings();

/* Error codes for the OCSP functions. */

/* Function codes. */
enum OCSP_F_ASN1_STRING_ENCODE = 100;
enum OCSP_F_D2I_OCSP_NONCE = 102;
enum OCSP_F_OCSP_BASIC_ADD1_STATUS = 103;
enum OCSP_F_OCSP_BASIC_SIGN = 104;
enum OCSP_F_OCSP_BASIC_VERIFY = 105;
enum OCSP_F_OCSP_CERT_ID_NEW = 101;
enum OCSP_F_OCSP_CHECK_DELEGATED = 106;
enum OCSP_F_OCSP_CHECK_IDS = 107;
enum OCSP_F_OCSP_CHECK_ISSUER = 108;
enum OCSP_F_OCSP_CHECK_VALIDITY = 115;
enum OCSP_F_OCSP_MATCH_ISSUERID = 109;
enum OCSP_F_OCSP_PARSE_URL = 114;
enum OCSP_F_OCSP_REQUEST_SIGN = 110;
enum OCSP_F_OCSP_REQUEST_VERIFY = 116;
enum OCSP_F_OCSP_RESPONSE_GET1_BASIC = 111;
enum OCSP_F_OCSP_SENDREQ_BIO = 112;
enum OCSP_F_OCSP_SENDREQ_NBIO = 117;
enum OCSP_F_PARSE_HTTP_LINE1 = 118;
enum OCSP_F_REQUEST_VERIFY = 113;

/* Reason codes. */
enum OCSP_R_BAD_DATA = 100;
enum OCSP_R_CERTIFICATE_VERIFY_ERROR = 101;
enum OCSP_R_DIGEST_ERR = 102;
enum OCSP_R_ERROR_IN_NEXTUPDATE_FIELD = 122;
enum OCSP_R_ERROR_IN_THISUPDATE_FIELD = 123;
enum OCSP_R_ERROR_PARSING_URL = 121;
enum OCSP_R_MISSING_OCSPSIGNING_USAGE = 103;
enum OCSP_R_NEXTUPDATE_BEFORE_THISUPDATE = 124;
enum OCSP_R_NOT_BASIC_RESPONSE = 104;
enum OCSP_R_NO_CERTIFICATES_IN_CHAIN = 105;
enum OCSP_R_NO_CONTENT = 106;
enum OCSP_R_NO_PUBLIC_KEY = 107;
enum OCSP_R_NO_RESPONSE_DATA = 108;
enum OCSP_R_NO_REVOKED_TIME = 109;
enum OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE = 110;
enum OCSP_R_REQUEST_NOT_SIGNED = 128;
enum OCSP_R_RESPONSE_CONTAINS_NO_REVOCATION_DATA = 111;
enum OCSP_R_ROOT_CA_NOT_TRUSTED = 112;
enum OCSP_R_SERVER_READ_ERROR = 113;
enum OCSP_R_SERVER_RESPONSE_ERROR = 114;
enum OCSP_R_SERVER_RESPONSE_PARSE_ERROR = 115;
enum OCSP_R_SERVER_WRITE_ERROR = 116;
enum OCSP_R_SIGNATURE_FAILURE = 117;
enum OCSP_R_SIGNER_CERTIFICATE_NOT_FOUND = 118;
enum OCSP_R_STATUS_EXPIRED = 125;
enum OCSP_R_STATUS_NOT_YET_VALID = 126;
enum OCSP_R_STATUS_TOO_OLD = 127;
enum OCSP_R_UNKNOWN_MESSAGE_DIGEST = 119;
enum OCSP_R_UNKNOWN_NID = 120;
enum OCSP_R_UNSUPPORTED_REQUESTORNAME_TYPE = 129;
